Pump



June 3, 1924. 1,496,633

F. H. HERTZLER PUMP Filed Oct. 20, 1922 I5 Sheets-Sheet 1 INVENTOR VITNESS: ATTORNEY June 3 1924.

F. H. HERTZLER PUMP Filed Oct. 20, 1922 3 Sheets-Sheet 2 N QR INVENTOR ATTORNEY June 3 1924. 1,496,633

F. H. HERTZLER PUMP Filed Oct. 20, 1922- 3 Sheets-Sheet 3 W ATTORNEY j Patented finned; @246 pairs stars-s rattan rarest carton. v

, FRANKLIN H; EERTZLER, E LANCASTER, PENNSYLVANIA rune.

Application filed October 20, 192%. Serial Ito: 595,811.

of which the following is a specification.

till) This invention relates to pressure genera tors or pumps and has for an object the provision of, a pump wherein pressure is generated by centrifugal forces. I

Another object of the invention is the provision of a rotary pump having a novel construction and arrangement of im ller vanes and guide vanes, whereby irect radial passages for the fluid passing through the pumpare provided and reaction against the direction ofrotation prevented. Another object of the invention is the provision of a novel arrangement of im peller and guide vanes, whereby all foreign matter passing. through the pump may be forced through the passages thus provided, before said vanes entirely pass one anotherw. With the above and other objects in view, the 'nvention further includes the following novel features and details of construe tion, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is a vertical sectional view of a single stage pump constructed in accordance with the invention Figure Q is a section at right angles to Fi re 1t igure 3 is an elevation partlyinjsection showing a difierent arrangement. of vanes and means whereby the suction at the pump intake may be increased.

Figure 4 is a view at right angles tol igare 3, parts being also shown in section.

Figure 5 is a view in diagram illustrat ing one arrangement of impeller and guide vanes.

Figure 6 isa similar view illustrating another arrangement. Figures? and 8 are like views showing still other arran ements. Referring in etail to the drawings and more especially to Figures 1 and 2, the invention is shown as mmprising a casing 10 which is mounted upon a suitable base 11 and which is provided at one side with an intake 12 and at its bottom with a discharge it Mounted in suitable bearings and extend= ing transversely of-the casing 10 is a shaft M, upon which may be mounteda pulley or other wheel 15 shaft 14;.

Mounted upon this shaft 14: is a rotor or impeller, which includes vanes 16, the said vanes being spaced apart and formed to provide radially extending passages 17 to provide for rotating the having substantially parallel walls so that I the width of the passages will be substan daily the same throughout their length.

The outer edges of the vanes it are beveled as shown at 18, the said bevel being relative to the direction of rotation of the vanes 10 as shown by the arrow. The amount of this bevel depends upon the deflection from a tangent to the periphery of the impeller, while the vanes are moving through a distance equal to the distance between two consecutive vanes. i

Surrounding the impeller and disposed concentrically are spaced guide vanes l9, the' spaces between these vanes providin substantially parallel passages 20, wit which the passages 17 are brought into register .during the rotation of the impeller. The outer ends of the passages 20 are 0& set or inclined with respect to their lengths, as shown at 21, so that the fluid passing W therethrough' will be deflected in the same direction, irrespective of the direction of I rotation of the impeller. By beveling the outer ends of the impeller vanes and the inner ends of the guide vanes, free passage of liquid through the vane passages is provided. In, other words, no shoulders or abutments are present across the ad a= cent ends of the vane passages to impede the passage of the liquid as the impeller vanw rotate across the passages between the guide .van'es.

The number and length of the vanes 16 andlg may vary. the lengths of the vanes and the width of the passages provided between them depending upon the size and character of the pump. The length of the vanes 16 and 19 may be relatively varied that is, the vanes 16 may be shortened an the vanes 19 lengthened, and vice versawhile the length of the combined passages 17 and 20 will remain substantially the same for a pump of a given character.

As illustrated in Figures 1 and 2,, the guide vanes are arranged substantially parallel tothe direction of rotation of roe impeller, while in Figures 3 and- 4, these ide vanes which are indicated at 22 arelnclined and are arranged in double formation, being se arated bya partition 23. This permits of t e passage of foreign matter from the impeller passages into the guide vane passages, before the impeller and guide vanes pass one another.

- posite sides of the impeller which may in communication with a common supply ,pipe or conduit 25. A single discharge outet 26 is provided.

Various other arrangements of vanes may be employed such for example as is illustrated in Figure 6, wherein the impeller vanes 27 are substantially V-shaped and the single intake.

disposed and the guide vanes 32 are disposed.

at an incline.

- Again referring to Figures 3 and 4 ofthe drawings, the shaft 33 u on which the impeller is mounted, has a so mounted thereon suction fans 34, which serve to increase In addition,-the arrangementof the vanes 22- permits of in-' take passages 24 being arranged upon 0 e e se the suction through the intake passages and therefore actto increase the pressure generated by the pump. I

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is here- -in reserved to make such changes as roperly fall-within the scope of the appende claims. vHaving described the invention what'is claimed 1s:-

1. A pump comprising a'housing having inlet and outlet ports, a rotor operating within the housing, spaced vanes carried by the rotor, s acedstationary-vanes disposed concentrical y around the rotor carried vanes; all of said vanes being arranged to provide passages of substantially the same width throughout their lengths and said rotor carried vanes being beveled inwardly at their outer ends in the same direction as their direction of rotation.

21A pump comprising a housing having inlet and outlet ports, a rotor operating Within the housing, spaced vanes carried by the rotor, spaced stationary vanes disposed concentrically around the rotor carried vanes, all of said vanesbeing arran ed to provide direct radial assages of su stantially the same widtli throughout their lengths and said rotor carried vanes 'being beveled inwardly at their outer ends-in the same direction as their direction of rotation.

In testimony whereof I afiix my signature.

FRANKLIN H. HERTZLER. 

